A tool-tip under your portrait will indicate how long Quickbeam is "pondering what to do next" -- Duration 18 hours.

This tool tip is almost invisible -- it is of a tree. If you mouse over the area below your portrait, it will display a pop-up. It also displays in the BuffBars plugin.

Stated another way, these three quests will each take respectively, 4, 5 or 6 eighteen hour periods (days) to complete. Or a total time of roughly two weeks to complete all three quests, completing one step per day. Now can be completed in a single day are repeatable daily.